View source for Palpitations Again, Have a Closer Look

{{NHJ|
|mainauthor= '''A.A.M. Wilde, L.R.C. Dekker'''
|edition= 2006:11,393
}}
[[Image:Puzzle_2006_11_393_fig1.jpg|Figure 1. The ECG on admission|thumb]]
[[Image:Puzzle_2006_11_393_fig2.jpg|Figure 2. The ECG shortly thereafter|thumb]]
An otherwise healthy 57-year-old lady presented
with palpitations without dizziness. The symptoms
had been present for a couple of years but the number
of episodes had increased recently. Onset and termination
were always sudden without specific triggers.
Physical examination on admission revealed no
specific abnormalities except for a rapid pulse (150
beats/min). Blood pressure was normal.
The ECG is shown in figure 1 and a few minutes
later figure 2 was recorded without any specific intervention.

'''What is your diagnosis?'''

[[Puzzle_2006_11_393_Answer|Answer]]